Assuming 90 degree F temperature rise, it could deliver 3/4 of a gallon per
minute. Mix this water with enough cold water so that the effective
temperature is raised 40 degrees, and you'll get a little over one and a
half gallons per minute. It's enough for one trickle of a shower but not
Even though the gas models work pretty well, I have my doubts about the
electric versions of instant water heaters. If electric is your only option,
buy a tank type water heater.
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